Finding the DNS server

[BluesMan]

I have a small network connected to the net via cable modem. I have a firewall running
RH6.1 and another RH6.1 server inside the network. I tried setting up named on the firewall, but I couldn't get it going. I ended up moving the named server to the internal server and it runs fine.
The problem is that the RH firewall cannot
resolve addresses on the internal network. I have /etc/resolv.conf set like this:

domain mydomain.com
nameserver 192.168.0.10 (internal linux box)
nameserver 24.3.232.33 (cox@home's namserv)
nameserver 24.3.232.34 (cox@home's namserv)

The firewall has two network cards, one is
addressed 192.168.0.14 for internal and
the other has my cox ip xx.xx.xx.xx.

The error I'm getting is :
***Can't find server name for the address 192.168.0.10: Non-existent host/domain

I beg to differ. There is a domain there.
How do I get the firewall to use this server
first?

[Hawkeey]

Can you ping 192.168.0.10 from the box? Maybe it's not looking for it in the right place or through the correct interface.

[BluesMan]

Pings just fine.
In order to get Cox@home to see the box I
had to set the host name to the Cox's
machine name. In other words a
uname -n will get you:
mycustno.subdomain.ne.home.com

/etc/hosts looks like this:
127.0.0.1 localhost
192.168.0.14 dumbledore.mydomain.com
xx.xx.xx.xx mycustno.subdomain.ne.home.com

Anybody know whether the hostname could be
jacking up resolv.conf?